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dendrite/serverkeyapi/internal/api.go
Neil Alexander 7d6461dd3c
Server key component (#1050)
* Server key API (works for monolith but not for polylith yet)

* Re-enable caching on server key API component

* Groundwork for HTTP APIs for server key API

* Hopefully implement HTTP for server key API

* Simplify public key request marshalling from map keys

* Update gomatrixserverlib

* go mod tidy

* Common -> internal

* remove keyring.go

* Update Docker Hub for server key API

* YAML is funny about indentation

* Wire in new server key API into hybrid monolith mode

* Create maps

* Route server key API endpoints on internal API mux

* Fix server key API URLs

* Add fetcher behaviour into server key API implementation

* Return error if we failed to fetch some keys

* Return results anyway

* Move things about a bit

* Remove unused code

* Fix comments, don't use federation sender URL in polylith mode

* Add server_key_api to sample config

* Review comments

* HTTP API to cache keys that have been requested

* Overwrite server_key_api listen in monolith hybrid mode
2020-05-27 10:19:24 +01:00

76 lines
2.4 KiB
Go

package internal
import (
"context"
"fmt"
"github.com/matrix-org/dendrite/internal/caching"
"github.com/matrix-org/dendrite/serverkeyapi/api"
"github.com/matrix-org/gomatrixserverlib"
)
type ServerKeyAPI struct {
api.ServerKeyInternalAPI
ImmutableCache caching.ImmutableCache
OurKeyRing gomatrixserverlib.KeyRing
FedClient *gomatrixserverlib.FederationClient
}
func (s *ServerKeyAPI) KeyRing() *gomatrixserverlib.KeyRing {
// Return a real keyring - one that has the real database and real
// fetchers.
return &s.OurKeyRing
}
func (s *ServerKeyAPI) StoreKeys(
ctx context.Context,
results map[gomatrixserverlib.PublicKeyLookupRequest]gomatrixserverlib.PublicKeyLookupResult,
) error {
// Store any keys that we were given in our database.
return s.OurKeyRing.KeyDatabase.StoreKeys(ctx, results)
}
func (s *ServerKeyAPI) FetchKeys(
ctx context.Context,
requests map[gomatrixserverlib.PublicKeyLookupRequest]gomatrixserverlib.Timestamp,
) (map[gomatrixserverlib.PublicKeyLookupRequest]gomatrixserverlib.PublicKeyLookupResult, error) {
results := map[gomatrixserverlib.PublicKeyLookupRequest]gomatrixserverlib.PublicKeyLookupResult{}
// First consult our local database and see if we have the requested
// keys. These might come from a cache, depending on the database
// implementation used.
if dbResults, err := s.OurKeyRing.KeyDatabase.FetchKeys(ctx, requests); err == nil {
// We successfully got some keys. Add them to the results and
// remove them from the request list.
for req, res := range dbResults {
results[req] = res
delete(requests, req)
}
}
// For any key requests that we still have outstanding, next try to
// fetch them directly. We'll go through each of the key fetchers to
// ask for the remaining keys.
for _, fetcher := range s.OurKeyRing.KeyFetchers {
if len(requests) == 0 {
break
}
if fetcherResults, err := fetcher.FetchKeys(ctx, requests); err == nil {
// We successfully got some keys. Add them to the results and
// remove them from the request list.
for req, res := range fetcherResults {
results[req] = res
delete(requests, req)
}
}
}
// If we failed to fetch any keys then we should report an error.
if len(requests) > 0 {
return results, fmt.Errorf("server key API failed to fetch %d keys", len(requests))
}
// Return the keys.
return results, nil
}
func (s *ServerKeyAPI) FetcherName() string {
return s.OurKeyRing.KeyDatabase.FetcherName()
}